The chance of Arsenal qualifying to the next round is slimmer compared to that of Porto. Porto is very strong and seems difficult to win recently, we saw that in their recent games. Arsenal is equal to the task but only if the can score more goals than Porto at Emirate tomorrow that is what will give them the best chance of qualifying.
Hey, if Porto chooses to settle for a draw then it will be difficult for Arsenal since drawing the match will send Arsenal packing out from the league. If Porto draw, they win. If Porto win the match, it is a win win, but if they lose 1-0 to Arsenal, they still have hope. It is only if they lose with two goals gap that Arsenal is free. If Arsenal draw a the match, they are out. If the lose the match they are out, if they win without two goals difference it is 50-50 odds that they are will stay or get out of the league.
True, the 1-0 defeat at home to Porto makes things difficult for Arsenal at the moment and even Martinelli possible absence will slightly reduce the sharpness of Arsenal forward line as seen against Brentford yesterday, Arsenal may now have the advantage of playing at home but still it will not guarantee Arsenal a win against Porto which performance so far has been quite remarkable when playing in the Champions League, But I think for the game Arsenal should be able to focus on how they can score the first goal in the game so that it at least gives confidence for Arsenal players to continue to create as many goals as possible in the game.
I think even though Arsenal are currently in a difficult position due to the first leg defeat but still Arsenal are the favorites to win the game, because so far I see if the mentality possessed by the Arsenal players has improved from the previous season, besides that Porto who are 1 goal ahead most likely they will try to stay at home Arsenal and if that happens then I am quite sure Arsenal will be able to take advantage of the gap What is in Porto defense to score, when Arsenal continues to attack and Porto prefers to defend, of course Arsenal have many time to create scoring opportunities goal in the game.